Originally published in 1743, the Prima Parte de Architettura was republished in 1750 with the title page much reworked.

Carceri d'Invenzione di G. Battista PiranesiTitle Page
Second State

With the second state of the "Prisons," Piranesi changed the publications title from Invenzioni Capric[ciose] di Carceri (Fanciful Images of Prisons) to Carceri d'Invenzione di G. Battista Piranesi (Imaginary Prisons of Gio. Batt. Piranesi)